the best part is people saying how dumb or annoying it is can only look at themselves. Twitter is a distribution platform. It would be like saying "the internet is stupid". YOU control how beneficial it is. I love twitter because it gives me real time information that I care about. If your twitter stream is boring or useless you need to blame the person in the mirror for that.
yeah me to. Most of my posts consist of Replies or Re-tweets. I think the problem is people use it as a "what am I/my friends up to" engine when really 99% of people don't give a shit. I use twitter for basically 2 main things, a news source and for comedy.
These are the kind of people you DON'T want to follow (unless you are into that stuff):